| 32425 EN | Ugly Vegetables, The | Lin, Grace | 3.1 | 0.5 |
| 32681 EN | Uncivil War, The | Klass, Sheila Solomon | 4.2 | 4.0 |
| 900462 EN | Uncle Arthur's Challenge (MH Edition) | Spirn, Michele | 4.9 | 0.5 |
| 900157 EN | Underground City (MH Edition), The | Pollard, Lauren Ray | 3.2 | 0.5 |
| 92 EN | Understood Betsy | Fisher, Dorothy | 5.9 | 8.0 |
| 31522 EN | Unleashed in Space | Steele, Alexander | 5.6 | 8.0 |
| 900441 EN | Unusual Bridges (MH Edition) | Goldstone, Bruce | 5.5 | 0.5 |
| 249 EN | Up a Road Slowly | Hunt, Irene | 6.6 | 8.0 |
| 549 EN | Up from Slavery | Washington, Booker T. | 8.2 | 13.0 |
| 6097 EN | Up North at the Cabin | Chall, Marsha | 3.8 | 0.5 |
| 900350 EN | Uphill Downhill Race (MH Edition), The | Lakin, Patricia | 4.5 | 0.5 |
| 143 EN | Upstairs Room, The | Reiss, Johanna | 2.9 | 6.0 |
| 900289 EN | Using Science to Play Baseball (MH Edition) | North, Emily | 4.6 | 0.5 |